Newbie: D Link Wireless Router and intellinet Wireless LAN adapter

Hardware

D Link DIR-615 N 300 Wireless Router.
intellinet 150 N USB Wireless Adapter.

Target:

1. I want my PC's Internet to be shared to other Laptops in my home through that Wireless D Link Router.
2. I want to access this Router and allow only a certain PC's of my home to use the Internet through it.
How can I do it?

OS: XP.

Thanks all.